- 1旋轉的；輪替的（如輪班制度）
Rotational describes anything to do with rotating - turning around in a circle, like a wheel. In science class you'll hear about 'rotational motion' or 'rotational speed', describing how fast something spins around its center. Away from science, it also describes a system where people or things take turns in a set order - a 'rotational schedule' at work means employees don't always do the same shift; they rotate through different ones over time.
From the word’s history
From rotation + -al.
rotation（旋轉）加 -al。
組成rotation + -al (an ending meaning 'having to do with')
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
rotationaladj/ɹoʊˈteɪʃənəl/
- 1
Of, pertaining to or caused by rotation.
- A steam turbine converts heat into rotational motion.
- 2
calculusmathematicssciencesHaving non-zero curl somewhere, i.e. not irrotational
rotationalnoun/ɹoʊˈteɪʃənəl/
- 1
An employee in a job rotation scheme.
- For the new rotationals, the American manager must begin the interview by asking the applicant a few questions of a personal nature about his family, childhood education, philosophy of life, social relationships, hobbies and interests, […]
- We have found that our future leaders are our current rotationals. We also offer educational assistance for all full-time employees, which pays 100% related to the job or 75% for all other classes.
- 2
Something, such as a joint, that moves by rotating.
- The positioning of the wrist is related to the upper three joints of the robot arm with three degrees of freedom, for the two motions of the shoulder and the one motion of the elbow, all rotationals.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。